/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:53:51,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:53:51,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:53:51,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:53:51,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:53:51,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:53:51,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:53:51,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:53:51,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:53:51,660 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:53:51,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:53:51,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:53:51,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:53:51,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:53:51,662 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:53:51,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:53:51,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:53:51,662 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:53:51,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:53:51,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:53:51,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:53:51,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:53:51,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:53:51,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:53:51,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:53:51,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:53:51,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:53:51,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:53:51,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:53:51,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:53:51,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:53:51,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:53:51,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:53:51,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:53:51,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:53:51,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:53:51,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:53:51,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:53:51,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:53:51,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:53:51,666 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:53:51,666 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:53:51,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:53:51,667 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:53:51,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:53:51,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:53:51,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:53:51,877 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:53:51,877 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:53:51,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-15 17:53:53,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:53:53,400 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:53:53,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-15 17:53:53,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/137bfd2af/36bf8daa82c34f4d92b6e13706c5fef5/FLAGda8ced544 [2023-12-15 17:53:53,435 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/137bfd2af/36bf8daa82c34f4d92b6e13706c5fef5 [2023-12-15 17:53:53,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:53:53,437 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:53:53,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:53:53,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:53:53,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:53:53,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:53:53" (1/1) ... [2023-12-15 17:53:53,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2715f5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:53, skipping insertion in model container [2023-12-15 17:53:53,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:53:53" (1/1) ... [2023-12-15 17:53:53,525 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:53:53,794 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[11705,11718] [2023-12-15 17:53:53,856 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[18995,19008] [2023-12-15 17:53:54,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:53:54,403 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:53:54,422 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[11705,11718] [2023-12-15 17:53:54,429 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[18995,19008] [2023-12-15 17:53:54,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:53:54,708 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:53:54,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54 WrapperNode [2023-12-15 17:53:54,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:53:54,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:53:54,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:53:54,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:53:54,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:54,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:55,108 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5093 [2023-12-15 17:53:55,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:53:55,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:53:55,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:53:55,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:53:55,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:55,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:55,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:55,241 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 17:53:55,241 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:55,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:55,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:55,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:55,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:55,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:55,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:53:55,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:53:55,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:53:55,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:53:55,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (1/1) ... [2023-12-15 17:53:55,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:53:55,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:53:55,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 17:53:55,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 17:53:55,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:53:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:53:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:53:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:53:55,772 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:53:55,774 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:53:58,694 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:53:58,733 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:53:58,733 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 17:53:58,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:53:58 BoogieIcfgContainer [2023-12-15 17:53:58,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:53:58,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:53:58,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:53:58,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:53:58,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:53:53" (1/3) ... [2023-12-15 17:53:58,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7529d905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:53:58, skipping insertion in model container [2023-12-15 17:53:58,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:53:54" (2/3) ... [2023-12-15 17:53:58,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7529d905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:53:58, skipping insertion in model container [2023-12-15 17:53:58,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:53:58" (3/3) ... [2023-12-15 17:53:58,739 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-15 17:53:58,750 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:53:58,750 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:53:58,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:53:58,795 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6946b741, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:53:58,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:53:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 17:53:58,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:58,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:58,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:58,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1695125417, now seen corresponding path program 1 times [2023-12-15 17:53:58,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:58,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744790606] [2023-12-15 17:53:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:58,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:58,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:58,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744790606] [2023-12-15 17:53:58,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744790606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:58,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:58,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:53:58,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33766360] [2023-12-15 17:53:58,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:58,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 17:53:58,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:58,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 17:53:58,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:53:58,985 INFO L87 Difference]: Start difference. First operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:59,067 INFO L93 Difference]: Finished difference Result 1636 states and 3221 transitions. [2023-12-15 17:53:59,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 17:53:59,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-15 17:53:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:59,079 INFO L225 Difference]: With dead ends: 1636 [2023-12-15 17:53:59,080 INFO L226 Difference]: Without dead ends: 832 [2023-12-15 17:53:59,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:53:59,085 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:59,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1573 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:59,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-15 17:53:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-15 17:53:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8963855421686746) internal successors, (1574), 831 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1574 transitions. [2023-12-15 17:53:59,134 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1574 transitions. Word has length 21 [2023-12-15 17:53:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:59,134 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1574 transitions. [2023-12-15 17:53:59,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1574 transitions. [2023-12-15 17:53:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 17:53:59,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:59,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:59,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:53:59,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:59,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:59,136 INFO L85 PathProgramCache]: Analyzing trace with hash 106777515, now seen corresponding path program 1 times [2023-12-15 17:53:59,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:59,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769248783] [2023-12-15 17:53:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:59,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:59,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:59,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769248783] [2023-12-15 17:53:59,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769248783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:59,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:59,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:53:59,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669470274] [2023-12-15 17:53:59,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:59,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:53:59,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:59,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:53:59,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:53:59,310 INFO L87 Difference]: Start difference. First operand 832 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:59,380 INFO L93 Difference]: Finished difference Result 878 states and 1646 transitions. [2023-12-15 17:53:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:53:59,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-15 17:53:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:59,383 INFO L225 Difference]: With dead ends: 878 [2023-12-15 17:53:59,383 INFO L226 Difference]: Without dead ends: 832 [2023-12-15 17:53:59,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:53:59,385 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:59,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4678 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:59,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-15 17:53:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-15 17:53:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8590361445783132) internal successors, (1543), 831 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:59,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1543 transitions. [2023-12-15 17:53:59,402 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1543 transitions. Word has length 21 [2023-12-15 17:53:59,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:59,402 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1543 transitions. [2023-12-15 17:53:59,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:59,402 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1543 transitions. [2023-12-15 17:53:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 17:53:59,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:59,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:59,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:53:59,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:59,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:59,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1212971778, now seen corresponding path program 1 times [2023-12-15 17:53:59,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:59,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672969089] [2023-12-15 17:53:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:59,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:59,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:59,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672969089] [2023-12-15 17:53:59,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672969089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:59,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:59,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:53:59,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352305222] [2023-12-15 17:53:59,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:59,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:53:59,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:53:59,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:53:59,676 INFO L87 Difference]: Start difference. First operand 832 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:59,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:59,889 INFO L93 Difference]: Finished difference Result 1262 states and 2233 transitions. [2023-12-15 17:53:59,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 17:53:59,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-15 17:53:59,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:59,895 INFO L225 Difference]: With dead ends: 1262 [2023-12-15 17:53:59,895 INFO L226 Difference]: Without dead ends: 1219 [2023-12-15 17:53:59,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-15 17:53:59,899 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 7959 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7959 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:59,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7959 Valid, 2654 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:53:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-12-15 17:53:59,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 873. [2023-12-15 17:53:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8473019517795637) internal successors, (1609), 872 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1609 transitions. [2023-12-15 17:53:59,923 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1609 transitions. Word has length 51 [2023-12-15 17:53:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:59,927 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1609 transitions. [2023-12-15 17:53:59,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1609 transitions. [2023-12-15 17:53:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-15 17:53:59,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:59,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:59,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:53:59,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:59,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1583069298, now seen corresponding path program 1 times [2023-12-15 17:53:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:59,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434833771] [2023-12-15 17:53:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:59,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:00,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:00,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434833771] [2023-12-15 17:54:00,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434833771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:00,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:00,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:00,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272471390] [2023-12-15 17:54:00,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:00,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:00,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:00,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:00,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:00,054 INFO L87 Difference]: Start difference. First operand 873 states and 1609 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:00,096 INFO L93 Difference]: Finished difference Result 1030 states and 1860 transitions. [2023-12-15 17:54:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:00,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-15 17:54:00,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:00,115 INFO L225 Difference]: With dead ends: 1030 [2023-12-15 17:54:00,115 INFO L226 Difference]: Without dead ends: 946 [2023-12-15 17:54:00,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:00,116 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1482 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:00,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1597 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:00,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2023-12-15 17:54:00,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 942. [2023-12-15 17:54:00,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8265957446808512) internal successors, (1717), 941 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1717 transitions. [2023-12-15 17:54:00,149 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1717 transitions. Word has length 53 [2023-12-15 17:54:00,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:00,150 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1717 transitions. [2023-12-15 17:54:00,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,150 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1717 transitions. [2023-12-15 17:54:00,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-15 17:54:00,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:00,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:00,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:54:00,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:00,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:00,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1585214250, now seen corresponding path program 1 times [2023-12-15 17:54:00,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:00,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806457294] [2023-12-15 17:54:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:00,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:00,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:00,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806457294] [2023-12-15 17:54:00,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806457294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:00,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:00,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:00,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315648428] [2023-12-15 17:54:00,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:00,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:00,432 INFO L87 Difference]: Start difference. First operand 942 states and 1717 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:00,598 INFO L93 Difference]: Finished difference Result 1097 states and 1961 transitions. [2023-12-15 17:54:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:00,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-15 17:54:00,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:00,603 INFO L225 Difference]: With dead ends: 1097 [2023-12-15 17:54:00,604 INFO L226 Difference]: Without dead ends: 944 [2023-12-15 17:54:00,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-15 17:54:00,607 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7454 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7454 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:00,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7454 Valid, 1790 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-12-15 17:54:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-12-15 17:54:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2023-12-15 17:54:00,629 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 53 [2023-12-15 17:54:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:00,629 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2023-12-15 17:54:00,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2023-12-15 17:54:00,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 17:54:00,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:00,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:00,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:54:00,633 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:00,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1767897232, now seen corresponding path program 1 times [2023-12-15 17:54:00,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:00,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191005020] [2023-12-15 17:54:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:00,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:00,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:00,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191005020] [2023-12-15 17:54:00,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191005020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:00,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:00,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:54:00,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763995947] [2023-12-15 17:54:00,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:00,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:54:00,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:00,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:54:00,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:54:00,803 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:00,864 INFO L93 Difference]: Finished difference Result 950 states and 1724 transitions. [2023-12-15 17:54:00,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:54:00,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-15 17:54:00,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:00,869 INFO L225 Difference]: With dead ends: 950 [2023-12-15 17:54:00,869 INFO L226 Difference]: Without dead ends: 948 [2023-12-15 17:54:00,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:54:00,873 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:00,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4609 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:00,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-15 17:54:00,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 946. [2023-12-15 17:54:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 944 states have (on average 1.819915254237288) internal successors, (1718), 945 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1718 transitions. [2023-12-15 17:54:00,892 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1718 transitions. Word has length 54 [2023-12-15 17:54:00,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:00,892 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1718 transitions. [2023-12-15 17:54:00,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,893 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1718 transitions. [2023-12-15 17:54:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 17:54:00,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:00,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:00,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:54:00,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:00,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:00,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1923112714, now seen corresponding path program 1 times [2023-12-15 17:54:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:00,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428844182] [2023-12-15 17:54:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:00,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:00,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:00,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428844182] [2023-12-15 17:54:00,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428844182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:00,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:00,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:00,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144341852] [2023-12-15 17:54:00,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:00,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:00,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:00,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:00,947 INFO L87 Difference]: Start difference. First operand 946 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:00,968 INFO L93 Difference]: Finished difference Result 1244 states and 2178 transitions. [2023-12-15 17:54:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:00,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-15 17:54:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:00,973 INFO L225 Difference]: With dead ends: 1244 [2023-12-15 17:54:00,973 INFO L226 Difference]: Without dead ends: 1087 [2023-12-15 17:54:00,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:00,975 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1495 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:00,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1658 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-15 17:54:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1085. [2023-12-15 17:54:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1083 states have (on average 1.7811634349030472) internal successors, (1929), 1084 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1929 transitions. [2023-12-15 17:54:00,992 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1929 transitions. Word has length 55 [2023-12-15 17:54:00,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:00,992 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1929 transitions. [2023-12-15 17:54:00,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:00,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1929 transitions. [2023-12-15 17:54:00,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 17:54:00,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:00,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:00,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:54:00,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:00,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1963056650, now seen corresponding path program 1 times [2023-12-15 17:54:00,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:00,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017243442] [2023-12-15 17:54:00,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:00,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:01,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:01,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017243442] [2023-12-15 17:54:01,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017243442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:01,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:01,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:01,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955688036] [2023-12-15 17:54:01,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:01,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:01,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:01,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:01,035 INFO L87 Difference]: Start difference. First operand 1085 states and 1929 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:01,060 INFO L93 Difference]: Finished difference Result 1645 states and 2783 transitions. [2023-12-15 17:54:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:01,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-15 17:54:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:01,066 INFO L225 Difference]: With dead ends: 1645 [2023-12-15 17:54:01,066 INFO L226 Difference]: Without dead ends: 1349 [2023-12-15 17:54:01,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:01,068 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1493 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:01,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1660 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:01,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2023-12-15 17:54:01,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1347. [2023-12-15 17:54:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1345 states have (on average 1.7241635687732342) internal successors, (2319), 1346 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2319 transitions. [2023-12-15 17:54:01,089 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2319 transitions. Word has length 55 [2023-12-15 17:54:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:01,090 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2319 transitions. [2023-12-15 17:54:01,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2319 transitions. [2023-12-15 17:54:01,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 17:54:01,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:01,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:01,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:54:01,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:01,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1337400586, now seen corresponding path program 1 times [2023-12-15 17:54:01,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:01,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449658779] [2023-12-15 17:54:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:01,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:01,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:01,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449658779] [2023-12-15 17:54:01,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449658779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:01,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:01,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:01,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110643319] [2023-12-15 17:54:01,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:01,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:01,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:01,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:01,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:01,140 INFO L87 Difference]: Start difference. First operand 1347 states and 2319 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:01,169 INFO L93 Difference]: Finished difference Result 2399 states and 3897 transitions. [2023-12-15 17:54:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:01,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-15 17:54:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:01,174 INFO L225 Difference]: With dead ends: 2399 [2023-12-15 17:54:01,174 INFO L226 Difference]: Without dead ends: 1841 [2023-12-15 17:54:01,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:01,177 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1491 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:01,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2023-12-15 17:54:01,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1839. [2023-12-15 17:54:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1837 states have (on average 1.6521502449646162) internal successors, (3035), 1838 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 3035 transitions. [2023-12-15 17:54:01,209 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 3035 transitions. Word has length 55 [2023-12-15 17:54:01,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:01,209 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 3035 transitions. [2023-12-15 17:54:01,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 3035 transitions. [2023-12-15 17:54:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 17:54:01,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:01,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:01,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:54:01,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:01,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:01,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2068833270, now seen corresponding path program 1 times [2023-12-15 17:54:01,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:01,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379977387] [2023-12-15 17:54:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:01,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:01,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:01,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379977387] [2023-12-15 17:54:01,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379977387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:01,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:01,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:01,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669224585] [2023-12-15 17:54:01,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:01,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:01,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:01,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:01,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:01,243 INFO L87 Difference]: Start difference. First operand 1839 states and 3035 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:01,284 INFO L93 Difference]: Finished difference Result 3811 states and 5933 transitions. [2023-12-15 17:54:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:01,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-15 17:54:01,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:01,291 INFO L225 Difference]: With dead ends: 3811 [2023-12-15 17:54:01,292 INFO L226 Difference]: Without dead ends: 2761 [2023-12-15 17:54:01,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:01,295 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1489 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:01,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1664 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2023-12-15 17:54:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2759. [2023-12-15 17:54:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2757 states have (on average 1.5738121146173376) internal successors, (4339), 2758 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4339 transitions. [2023-12-15 17:54:01,349 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4339 transitions. Word has length 55 [2023-12-15 17:54:01,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:01,350 INFO L495 AbstractCegarLoop]: Abstraction has 2759 states and 4339 transitions. [2023-12-15 17:54:01,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4339 transitions. [2023-12-15 17:54:01,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-15 17:54:01,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:01,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:01,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:54:01,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:01,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:01,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1474848977, now seen corresponding path program 1 times [2023-12-15 17:54:01,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:01,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789848379] [2023-12-15 17:54:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:01,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:01,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789848379] [2023-12-15 17:54:01,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789848379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:01,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:01,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:01,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301473785] [2023-12-15 17:54:01,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:01,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:01,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:01,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:01,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:01,390 INFO L87 Difference]: Start difference. First operand 2759 states and 4339 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:01,445 INFO L93 Difference]: Finished difference Result 4814 states and 7385 transitions. [2023-12-15 17:54:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:01,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-15 17:54:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:01,455 INFO L225 Difference]: With dead ends: 4814 [2023-12-15 17:54:01,455 INFO L226 Difference]: Without dead ends: 3691 [2023-12-15 17:54:01,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:01,461 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 1494 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:01,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2023-12-15 17:54:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3689. [2023-12-15 17:54:01,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 3687 states have (on average 1.537564415513968) internal successors, (5669), 3688 states have internal predecessors, (5669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5669 transitions. [2023-12-15 17:54:01,579 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5669 transitions. Word has length 57 [2023-12-15 17:54:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:01,579 INFO L495 AbstractCegarLoop]: Abstraction has 3689 states and 5669 transitions. [2023-12-15 17:54:01,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5669 transitions. [2023-12-15 17:54:01,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 17:54:01,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:01,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:01,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:54:01,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:01,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:01,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1775244357, now seen corresponding path program 1 times [2023-12-15 17:54:01,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:01,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923987755] [2023-12-15 17:54:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:01,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:01,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:01,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923987755] [2023-12-15 17:54:01,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923987755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:01,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:01,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:01,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500996883] [2023-12-15 17:54:01,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:01,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:54:01,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:01,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:54:01,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:54:01,667 INFO L87 Difference]: Start difference. First operand 3689 states and 5669 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:07,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:07,152 INFO L93 Difference]: Finished difference Result 5944 states and 9978 transitions. [2023-12-15 17:54:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:54:07,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 17:54:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:07,175 INFO L225 Difference]: With dead ends: 5944 [2023-12-15 17:54:07,176 INFO L226 Difference]: Without dead ends: 5191 [2023-12-15 17:54:07,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:54:07,179 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 2384 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:07,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 812 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-15 17:54:07,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2023-12-15 17:54:07,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5191. [2023-12-15 17:54:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5189 states have (on average 1.5022162266332626) internal successors, (7795), 5190 states have internal predecessors, (7795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 7795 transitions. [2023-12-15 17:54:07,298 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 7795 transitions. Word has length 62 [2023-12-15 17:54:07,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:07,298 INFO L495 AbstractCegarLoop]: Abstraction has 5191 states and 7795 transitions. [2023-12-15 17:54:07,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 7795 transitions. [2023-12-15 17:54:07,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 17:54:07,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:07,303 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:07,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:54:07,304 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:07,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:07,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1067448203, now seen corresponding path program 1 times [2023-12-15 17:54:07,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:07,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339736958] [2023-12-15 17:54:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:07,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 17:54:07,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:07,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339736958] [2023-12-15 17:54:07,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339736958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:07,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:07,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:07,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81179837] [2023-12-15 17:54:07,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:07,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:07,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:07,413 INFO L87 Difference]: Start difference. First operand 5191 states and 7795 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:07,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:07,798 INFO L93 Difference]: Finished difference Result 20291 states and 29609 transitions. [2023-12-15 17:54:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:07,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-15 17:54:07,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:07,843 INFO L225 Difference]: With dead ends: 20291 [2023-12-15 17:54:07,843 INFO L226 Difference]: Without dead ends: 17393 [2023-12-15 17:54:07,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:54:07,852 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 6314 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:07,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6314 Valid, 3633 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:07,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17393 states. [2023-12-15 17:54:08,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17393 to 8087. [2023-12-15 17:54:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8087 states, 8085 states have (on average 1.4766852195423623) internal successors, (11939), 8086 states have internal predecessors, (11939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 11939 transitions. [2023-12-15 17:54:08,253 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 11939 transitions. Word has length 73 [2023-12-15 17:54:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:08,253 INFO L495 AbstractCegarLoop]: Abstraction has 8087 states and 11939 transitions. [2023-12-15 17:54:08,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 11939 transitions. [2023-12-15 17:54:08,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 17:54:08,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:08,255 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:08,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:54:08,255 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:08,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1107392139, now seen corresponding path program 1 times [2023-12-15 17:54:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:08,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286125803] [2023-12-15 17:54:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 17:54:08,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286125803] [2023-12-15 17:54:08,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286125803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:08,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:08,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501214020] [2023-12-15 17:54:08,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:08,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:08,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:08,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:08,437 INFO L87 Difference]: Start difference. First operand 8087 states and 11939 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:08,916 INFO L93 Difference]: Finished difference Result 23187 states and 33753 transitions. [2023-12-15 17:54:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-15 17:54:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:08,950 INFO L225 Difference]: With dead ends: 23187 [2023-12-15 17:54:08,950 INFO L226 Difference]: Without dead ends: 20289 [2023-12-15 17:54:08,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:54:08,960 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6338 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:08,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3557 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20289 states. [2023-12-15 17:54:09,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20289 to 12439. [2023-12-15 17:54:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12439 states, 12437 states have (on average 1.4565409664710138) internal successors, (18115), 12438 states have internal predecessors, (18115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 18115 transitions. [2023-12-15 17:54:09,279 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 18115 transitions. Word has length 73 [2023-12-15 17:54:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:09,280 INFO L495 AbstractCegarLoop]: Abstraction has 12439 states and 18115 transitions. [2023-12-15 17:54:09,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 18115 transitions. [2023-12-15 17:54:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 17:54:09,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:09,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:09,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:54:09,281 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:09,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:09,282 INFO L85 PathProgramCache]: Analyzing trace with hash 481736075, now seen corresponding path program 1 times [2023-12-15 17:54:09,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:09,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644014294] [2023-12-15 17:54:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:09,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 17:54:09,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:09,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644014294] [2023-12-15 17:54:09,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644014294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:09,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:09,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:09,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111260925] [2023-12-15 17:54:09,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:09,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:09,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:09,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:09,382 INFO L87 Difference]: Start difference. First operand 12439 states and 18115 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:09,830 INFO L93 Difference]: Finished difference Result 26083 states and 37897 transitions. [2023-12-15 17:54:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:09,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-15 17:54:09,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:09,866 INFO L225 Difference]: With dead ends: 26083 [2023-12-15 17:54:09,866 INFO L226 Difference]: Without dead ends: 23185 [2023-12-15 17:54:09,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:54:09,879 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 6382 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6382 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:09,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6382 Valid, 3520 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:09,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23185 states. [2023-12-15 17:54:10,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23185 to 15335. [2023-12-15 17:54:10,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15335 states, 15333 states have (on average 1.451705471858084) internal successors, (22259), 15334 states have internal predecessors, (22259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:10,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15335 states to 15335 states and 22259 transitions. [2023-12-15 17:54:10,444 INFO L78 Accepts]: Start accepts. Automaton has 15335 states and 22259 transitions. Word has length 73 [2023-12-15 17:54:10,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:10,445 INFO L495 AbstractCegarLoop]: Abstraction has 15335 states and 22259 transitions. [2023-12-15 17:54:10,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:10,445 INFO L276 IsEmpty]: Start isEmpty. Operand 15335 states and 22259 transitions. [2023-12-15 17:54:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 17:54:10,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:10,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:54:10,447 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:10,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1370469515, now seen corresponding path program 1 times [2023-12-15 17:54:10,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:10,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784323321] [2023-12-15 17:54:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:10,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 17:54:10,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:10,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784323321] [2023-12-15 17:54:10,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784323321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:10,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:10,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:10,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145164918] [2023-12-15 17:54:10,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:10,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:10,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:10,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:10,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:10,564 INFO L87 Difference]: Start difference. First operand 15335 states and 22259 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:11,270 INFO L93 Difference]: Finished difference Result 28979 states and 42041 transitions. [2023-12-15 17:54:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:11,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-15 17:54:11,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:11,312 INFO L225 Difference]: With dead ends: 28979 [2023-12-15 17:54:11,312 INFO L226 Difference]: Without dead ends: 26081 [2023-12-15 17:54:11,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:54:11,320 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 6329 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6329 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:11,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6329 Valid, 3586 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:11,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26081 states. [2023-12-15 17:54:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26081 to 18231. [2023-12-15 17:54:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18231 states, 18229 states have (on average 1.4484063854298097) internal successors, (26403), 18230 states have internal predecessors, (26403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18231 states to 18231 states and 26403 transitions. [2023-12-15 17:54:11,774 INFO L78 Accepts]: Start accepts. Automaton has 18231 states and 26403 transitions. Word has length 73 [2023-12-15 17:54:11,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:11,774 INFO L495 AbstractCegarLoop]: Abstraction has 18231 states and 26403 transitions. [2023-12-15 17:54:11,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 18231 states and 26403 transitions. [2023-12-15 17:54:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-15 17:54:11,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:11,776 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:11,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 17:54:11,776 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:11,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:11,776 INFO L85 PathProgramCache]: Analyzing trace with hash -823987853, now seen corresponding path program 1 times [2023-12-15 17:54:11,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:11,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776076901] [2023-12-15 17:54:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:11,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:11,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:11,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776076901] [2023-12-15 17:54:11,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776076901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:11,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:11,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:11,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600238988] [2023-12-15 17:54:11,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:11,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:11,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:11,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:11,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:11,858 INFO L87 Difference]: Start difference. First operand 18231 states and 26403 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:12,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:12,128 INFO L93 Difference]: Finished difference Result 29518 states and 42793 transitions. [2023-12-15 17:54:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:12,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-15 17:54:12,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:12,149 INFO L225 Difference]: With dead ends: 29518 [2023-12-15 17:54:12,149 INFO L226 Difference]: Without dead ends: 13580 [2023-12-15 17:54:12,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:12,165 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 50 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:12,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13580 states. [2023-12-15 17:54:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13580 to 13578. [2023-12-15 17:54:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13578 states, 13576 states have (on average 1.4594873305833824) internal successors, (19814), 13577 states have internal predecessors, (19814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13578 states to 13578 states and 19814 transitions. [2023-12-15 17:54:12,474 INFO L78 Accepts]: Start accepts. Automaton has 13578 states and 19814 transitions. Word has length 75 [2023-12-15 17:54:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:12,474 INFO L495 AbstractCegarLoop]: Abstraction has 13578 states and 19814 transitions. [2023-12-15 17:54:12,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 13578 states and 19814 transitions. [2023-12-15 17:54:12,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-15 17:54:12,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:12,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:12,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 17:54:12,476 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:12,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash 865276784, now seen corresponding path program 1 times [2023-12-15 17:54:12,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:12,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58013509] [2023-12-15 17:54:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:12,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:54:12,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:12,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58013509] [2023-12-15 17:54:12,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58013509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:12,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:12,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:12,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847169614] [2023-12-15 17:54:12,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:12,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:12,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:12,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:12,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:12,572 INFO L87 Difference]: Start difference. First operand 13578 states and 19814 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:12,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:12,982 INFO L93 Difference]: Finished difference Result 23830 states and 34700 transitions. [2023-12-15 17:54:12,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:12,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-15 17:54:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:13,010 INFO L225 Difference]: With dead ends: 23830 [2023-12-15 17:54:13,011 INFO L226 Difference]: Without dead ends: 21780 [2023-12-15 17:54:13,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:54:13,020 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 6321 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6321 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:13,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6321 Valid, 3692 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:13,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21780 states. [2023-12-15 17:54:13,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21780 to 15626. [2023-12-15 17:54:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15626 states, 15624 states have (on average 1.456605222734255) internal successors, (22758), 15625 states have internal predecessors, (22758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:13,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15626 states to 15626 states and 22758 transitions. [2023-12-15 17:54:13,432 INFO L78 Accepts]: Start accepts. Automaton has 15626 states and 22758 transitions. Word has length 75 [2023-12-15 17:54:13,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:13,432 INFO L495 AbstractCegarLoop]: Abstraction has 15626 states and 22758 transitions. [2023-12-15 17:54:13,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:13,432 INFO L276 IsEmpty]: Start isEmpty. Operand 15626 states and 22758 transitions. [2023-12-15 17:54:13,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 17:54:13,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:13,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:13,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 17:54:13,434 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:13,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:13,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2077236487, now seen corresponding path program 1 times [2023-12-15 17:54:13,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:13,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153946964] [2023-12-15 17:54:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:13,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:13,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:13,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153946964] [2023-12-15 17:54:13,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153946964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:13,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:13,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:13,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985642374] [2023-12-15 17:54:13,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:13,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:13,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:13,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:13,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:13,497 INFO L87 Difference]: Start difference. First operand 15626 states and 22758 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:13,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:13,649 INFO L93 Difference]: Finished difference Result 22286 states and 32328 transitions. [2023-12-15 17:54:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:13,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-15 17:54:13,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:13,660 INFO L225 Difference]: With dead ends: 22286 [2023-12-15 17:54:13,661 INFO L226 Difference]: Without dead ends: 8972 [2023-12-15 17:54:13,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:13,673 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 45 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:13,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3091 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8972 states. [2023-12-15 17:54:13,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8972 to 8970. [2023-12-15 17:54:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8970 states, 8968 states have (on average 1.4591882247992864) internal successors, (13086), 8969 states have internal predecessors, (13086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8970 states to 8970 states and 13086 transitions. [2023-12-15 17:54:13,855 INFO L78 Accepts]: Start accepts. Automaton has 8970 states and 13086 transitions. Word has length 76 [2023-12-15 17:54:13,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:13,855 INFO L495 AbstractCegarLoop]: Abstraction has 8970 states and 13086 transitions. [2023-12-15 17:54:13,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8970 states and 13086 transitions. [2023-12-15 17:54:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 17:54:13,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:13,856 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:13,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 17:54:13,856 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:13,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1152666791, now seen corresponding path program 1 times [2023-12-15 17:54:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879387791] [2023-12-15 17:54:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:13,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:13,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879387791] [2023-12-15 17:54:13,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879387791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:13,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:13,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:13,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057156422] [2023-12-15 17:54:13,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:13,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:13,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:13,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:13,918 INFO L87 Difference]: Start difference. First operand 8970 states and 13086 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:14,010 INFO L93 Difference]: Finished difference Result 12302 states and 17820 transitions. [2023-12-15 17:54:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:14,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-15 17:54:14,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:14,017 INFO L225 Difference]: With dead ends: 12302 [2023-12-15 17:54:14,018 INFO L226 Difference]: Without dead ends: 5644 [2023-12-15 17:54:14,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:14,025 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 42 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:14,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3076 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:14,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2023-12-15 17:54:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5642. [2023-12-15 17:54:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5640 states have (on average 1.471985815602837) internal successors, (8302), 5641 states have internal predecessors, (8302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 8302 transitions. [2023-12-15 17:54:14,127 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 8302 transitions. Word has length 78 [2023-12-15 17:54:14,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:14,127 INFO L495 AbstractCegarLoop]: Abstraction has 5642 states and 8302 transitions. [2023-12-15 17:54:14,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:14,127 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 8302 transitions. [2023-12-15 17:54:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 17:54:14,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:14,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:14,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 17:54:14,129 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:14,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:14,129 INFO L85 PathProgramCache]: Analyzing trace with hash 592619477, now seen corresponding path program 1 times [2023-12-15 17:54:14,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:14,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071160125] [2023-12-15 17:54:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:14,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:14,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071160125] [2023-12-15 17:54:14,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071160125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:14,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:14,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:14,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572924284] [2023-12-15 17:54:14,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:14,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:14,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:14,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:14,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:14,185 INFO L87 Difference]: Start difference. First operand 5642 states and 8302 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:14,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:14,236 INFO L93 Difference]: Finished difference Result 7310 states and 10644 transitions. [2023-12-15 17:54:14,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:14,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-15 17:54:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:14,241 INFO L225 Difference]: With dead ends: 7310 [2023-12-15 17:54:14,241 INFO L226 Difference]: Without dead ends: 3980 [2023-12-15 17:54:14,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:14,244 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 39 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:14,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3061 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2023-12-15 17:54:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3978. [2023-12-15 17:54:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3976 states have (on average 1.4929577464788732) internal successors, (5936), 3977 states have internal predecessors, (5936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 5936 transitions. [2023-12-15 17:54:14,307 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 5936 transitions. Word has length 80 [2023-12-15 17:54:14,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:14,308 INFO L495 AbstractCegarLoop]: Abstraction has 3978 states and 5936 transitions. [2023-12-15 17:54:14,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 5936 transitions. [2023-12-15 17:54:14,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 17:54:14,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:14,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:14,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 17:54:14,309 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:14,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash -495332221, now seen corresponding path program 1 times [2023-12-15 17:54:14,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:14,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302810515] [2023-12-15 17:54:14,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:14,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:14,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:14,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302810515] [2023-12-15 17:54:14,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302810515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:14,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:14,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:14,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896699252] [2023-12-15 17:54:14,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:14,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:14,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:14,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:14,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:14,364 INFO L87 Difference]: Start difference. First operand 3978 states and 5936 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:14,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:14,401 INFO L93 Difference]: Finished difference Result 4814 states and 7095 transitions. [2023-12-15 17:54:14,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:14,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-12-15 17:54:14,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:14,404 INFO L225 Difference]: With dead ends: 4814 [2023-12-15 17:54:14,405 INFO L226 Difference]: Without dead ends: 3148 [2023-12-15 17:54:14,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:14,407 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 36 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:14,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3046 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:14,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2023-12-15 17:54:14,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 3146. [2023-12-15 17:54:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3144 states have (on average 1.5159033078880406) internal successors, (4766), 3145 states have internal predecessors, (4766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4766 transitions. [2023-12-15 17:54:14,449 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4766 transitions. Word has length 82 [2023-12-15 17:54:14,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:14,449 INFO L495 AbstractCegarLoop]: Abstraction has 3146 states and 4766 transitions. [2023-12-15 17:54:14,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:14,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4766 transitions. [2023-12-15 17:54:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-15 17:54:14,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:14,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:14,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 17:54:14,452 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:14,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash -323964239, now seen corresponding path program 1 times [2023-12-15 17:54:14,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:14,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210175686] [2023-12-15 17:54:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:14,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:15,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:15,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210175686] [2023-12-15 17:54:15,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210175686] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:54:15,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048213034] [2023-12-15 17:54:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:15,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:54:15,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:54:15,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:54:15,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:54:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:15,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 17:54:15,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:54:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:54:15,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:54:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:54:15,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048213034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:54:15,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:54:15,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-15 17:54:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826302764] [2023-12-15 17:54:15,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:54:15,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 17:54:15,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:15,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 17:54:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-15 17:54:15,493 INFO L87 Difference]: Start difference. First operand 3146 states and 4766 transitions. Second operand has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:17,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:17,465 INFO L93 Difference]: Finished difference Result 9609 states and 13438 transitions. [2023-12-15 17:54:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-15 17:54:17,466 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-12-15 17:54:17,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:17,475 INFO L225 Difference]: With dead ends: 9609 [2023-12-15 17:54:17,475 INFO L226 Difference]: Without dead ends: 8775 [2023-12-15 17:54:17,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-15 17:54:17,482 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 11949 mSDsluCounter, 6370 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11949 SdHoareTripleChecker+Valid, 7884 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:17,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11949 Valid, 7884 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 17:54:17,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8775 states. [2023-12-15 17:54:17,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8775 to 8479. [2023-12-15 17:54:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8479 states, 8477 states have (on average 1.371357791671582) internal successors, (11625), 8478 states have internal predecessors, (11625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 11625 transitions. [2023-12-15 17:54:17,671 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 11625 transitions. Word has length 84 [2023-12-15 17:54:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:17,671 INFO L495 AbstractCegarLoop]: Abstraction has 8479 states and 11625 transitions. [2023-12-15 17:54:17,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:17,672 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 11625 transitions. [2023-12-15 17:54:17,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 17:54:17,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:17,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:17,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 17:54:17,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-15 17:54:17,878 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:17,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:17,879 INFO L85 PathProgramCache]: Analyzing trace with hash -152858016, now seen corresponding path program 1 times [2023-12-15 17:54:17,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:17,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577712686] [2023-12-15 17:54:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577712686] [2023-12-15 17:54:18,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577712686] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:54:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379562638] [2023-12-15 17:54:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:18,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:54:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:54:18,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:54:18,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:54:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:18,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 17:54:18,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:54:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:18,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:54:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:19,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379562638] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:54:19,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:54:19,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-15 17:54:19,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087806790] [2023-12-15 17:54:19,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:54:19,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-15 17:54:19,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:19,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-15 17:54:19,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-15 17:54:19,115 INFO L87 Difference]: Start difference. First operand 8479 states and 11625 transitions. Second operand has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:21,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:21,064 INFO L93 Difference]: Finished difference Result 22957 states and 30262 transitions. [2023-12-15 17:54:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-15 17:54:21,065 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-15 17:54:21,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:21,085 INFO L225 Difference]: With dead ends: 22957 [2023-12-15 17:54:21,085 INFO L226 Difference]: Without dead ends: 16832 [2023-12-15 17:54:21,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=670, Invalid=2410, Unknown=0, NotChecked=0, Total=3080 [2023-12-15 17:54:21,092 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 25212 mSDsluCounter, 5093 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25212 SdHoareTripleChecker+Valid, 6628 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:21,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25212 Valid, 6628 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:54:21,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16832 states. [2023-12-15 17:54:21,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16832 to 16208. [2023-12-15 17:54:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16208 states, 16206 states have (on average 1.3220412193014932) internal successors, (21425), 16207 states have internal predecessors, (21425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16208 states to 16208 states and 21425 transitions. [2023-12-15 17:54:21,525 INFO L78 Accepts]: Start accepts. Automaton has 16208 states and 21425 transitions. Word has length 85 [2023-12-15 17:54:21,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:21,526 INFO L495 AbstractCegarLoop]: Abstraction has 16208 states and 21425 transitions. [2023-12-15 17:54:21,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:21,526 INFO L276 IsEmpty]: Start isEmpty. Operand 16208 states and 21425 transitions. [2023-12-15 17:54:21,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 17:54:21,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:21,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:21,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 17:54:21,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-15 17:54:21,733 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:21,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:21,733 INFO L85 PathProgramCache]: Analyzing trace with hash -326486610, now seen corresponding path program 1 times [2023-12-15 17:54:21,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:21,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224003361] [2023-12-15 17:54:21,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:21,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:22,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:22,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224003361] [2023-12-15 17:54:22,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224003361] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:54:22,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711381418] [2023-12-15 17:54:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:22,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:54:22,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:54:22,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:54:22,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:54:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:22,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 17:54:22,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:54:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:22,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:54:23,808 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:23,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711381418] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:54:23,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:54:23,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-15 17:54:23,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742034168] [2023-12-15 17:54:23,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:54:23,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-15 17:54:23,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:23,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-15 17:54:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-12-15 17:54:23,810 INFO L87 Difference]: Start difference. First operand 16208 states and 21425 transitions. Second operand has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:27,031 INFO L93 Difference]: Finished difference Result 35194 states and 45629 transitions. [2023-12-15 17:54:27,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-15 17:54:27,032 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-15 17:54:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:27,056 INFO L225 Difference]: With dead ends: 35194 [2023-12-15 17:54:27,056 INFO L226 Difference]: Without dead ends: 22907 [2023-12-15 17:54:27,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1140, Invalid=4262, Unknown=0, NotChecked=0, Total=5402 [2023-12-15 17:54:27,069 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 14132 mSDsluCounter, 15466 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14132 SdHoareTripleChecker+Valid, 16985 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:27,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14132 Valid, 16985 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 17:54:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22907 states. [2023-12-15 17:54:27,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22907 to 22213. [2023-12-15 17:54:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22213 states, 22211 states have (on average 1.2978254018279232) internal successors, (28826), 22212 states have internal predecessors, (28826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22213 states to 22213 states and 28826 transitions. [2023-12-15 17:54:27,793 INFO L78 Accepts]: Start accepts. Automaton has 22213 states and 28826 transitions. Word has length 85 [2023-12-15 17:54:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:27,794 INFO L495 AbstractCegarLoop]: Abstraction has 22213 states and 28826 transitions. [2023-12-15 17:54:27,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:27,794 INFO L276 IsEmpty]: Start isEmpty. Operand 22213 states and 28826 transitions. [2023-12-15 17:54:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:54:27,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:27,795 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:27,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 17:54:28,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:54:28,001 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:28,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:28,001 INFO L85 PathProgramCache]: Analyzing trace with hash 8311151, now seen corresponding path program 1 times [2023-12-15 17:54:28,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:28,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000548182] [2023-12-15 17:54:28,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:28,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:28,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:28,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000548182] [2023-12-15 17:54:28,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000548182] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:54:28,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182775658] [2023-12-15 17:54:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:28,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:54:28,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:54:28,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:54:28,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 17:54:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:28,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-15 17:54:28,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:54:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:30,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:54:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:32,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182775658] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:54:32,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:54:32,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 43 [2023-12-15 17:54:32,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601616454] [2023-12-15 17:54:32,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:54:32,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-15 17:54:32,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:32,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-15 17:54:32,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1615, Unknown=0, NotChecked=0, Total=1806 [2023-12-15 17:54:32,354 INFO L87 Difference]: Start difference. First operand 22213 states and 28826 transitions. Second operand has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:50,120 INFO L93 Difference]: Finished difference Result 79043 states and 101136 transitions. [2023-12-15 17:54:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-15 17:54:50,120 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-15 17:54:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:50,187 INFO L225 Difference]: With dead ends: 79043 [2023-12-15 17:54:50,187 INFO L226 Difference]: Without dead ends: 61048 [2023-12-15 17:54:50,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11640 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=5588, Invalid=28084, Unknown=0, NotChecked=0, Total=33672 [2023-12-15 17:54:50,213 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 23988 mSDsluCounter, 18235 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23988 SdHoareTripleChecker+Valid, 19787 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:50,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23988 Valid, 19787 Invalid, 2815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 17:54:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61048 states. Received shutdown request... [2023-12-15 17:54:51,627 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:54:51,634 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:54:52,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61048 to 52974. [2023-12-15 17:54:52,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52974 states, 52972 states have (on average 1.2715019255455713) internal successors, (67354), 52973 states have internal predecessors, (67354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:52,239 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:54:52,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 17:54:52,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-15 17:54:52,444 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-15 17:54:52,446 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:54:52,448 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:52,449 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:54:52,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:54:52 BoogieIcfgContainer [2023-12-15 17:54:52,451 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:54:52,451 INFO L158 Benchmark]: Toolchain (without parser) took 59013.79ms. Allocated memory was 367.0MB in the beginning and 2.6GB in the end (delta: 2.2GB). Free memory was 300.1MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-15 17:54:52,451 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory was 133.9MB in the beginning and 133.8MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:54:52,452 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1270.46ms. Allocated memory is still 367.0MB. Free memory was 299.6MB in the beginning and 219.2MB in the end (delta: 80.4MB). Peak memory consumption was 82.0MB. Max. memory is 8.0GB. [2023-12-15 17:54:52,464 INFO L158 Benchmark]: Boogie Procedure Inliner took 399.07ms. Allocated memory is still 367.0MB. Free memory was 219.2MB in the beginning and 253.9MB in the end (delta: -34.8MB). Peak memory consumption was 78.5MB. Max. memory is 8.0GB. [2023-12-15 17:54:52,464 INFO L158 Benchmark]: Boogie Preprocessor took 414.80ms. Allocated memory was 367.0MB in the beginning and 651.2MB in the end (delta: 284.2MB). Free memory was 253.9MB in the beginning and 516.7MB in the end (delta: -262.8MB). Peak memory consumption was 114.2MB. Max. memory is 8.0GB. [2023-12-15 17:54:52,466 INFO L158 Benchmark]: RCFGBuilder took 3208.94ms. Allocated memory was 651.2MB in the beginning and 1.3GB in the end (delta: 651.2MB). Free memory was 516.3MB in the beginning and 1.1GB in the end (delta: -545.7MB). Peak memory consumption was 168.3MB. Max. memory is 8.0GB. [2023-12-15 17:54:52,467 INFO L158 Benchmark]: TraceAbstraction took 53715.75ms. Allocated memory was 1.3GB in the beginning and 2.6GB in the end (delta: 1.3GB). Free memory was 1.1GB in the beginning and 1.9GB in the end (delta: -825.7MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-15 17:54:52,474 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory was 133.9MB in the beginning and 133.8MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1270.46ms. Allocated memory is still 367.0MB. Free memory was 299.6MB in the beginning and 219.2MB in the end (delta: 80.4MB). Peak memory consumption was 82.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 399.07ms. Allocated memory is still 367.0MB. Free memory was 219.2MB in the beginning and 253.9MB in the end (delta: -34.8MB). Peak memory consumption was 78.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 414.80ms. Allocated memory was 367.0MB in the beginning and 651.2MB in the end (delta: 284.2MB). Free memory was 253.9MB in the beginning and 516.7MB in the end (delta: -262.8MB). Peak memory consumption was 114.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3208.94ms. Allocated memory was 651.2MB in the beginning and 1.3GB in the end (delta: 651.2MB). Free memory was 516.3MB in the beginning and 1.1GB in the end (delta: -545.7MB). Peak memory consumption was 168.3MB. Max. memory is 8.0GB. * TraceAbstraction took 53715.75ms. Allocated memory was 1.3GB in the beginning and 2.6GB in the end (delta: 1.3GB). Free memory was 1.1GB in the beginning and 1.9GB in the end (delta: -825.7MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 439]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 439). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 643]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 643). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 836 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 53.7s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 34.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133919 SdHoareTripleChecker+Valid, 9.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133919 mSDsluCounter, 110668 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70714 mSDsCounter, 1449 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11766 IncrementalHoareTripleChecker+Invalid, 13215 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1449 mSolverCounterUnsat, 39954 mSDtfsCounter, 11766 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1108 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14644 ImplicationChecksByTransitivity, 20.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22213occurred in iteration=25, InterpolantAutomatonStates: 371, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 26 MinimizatonAttempts, 40998 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 2030 NumberOfCodeBlocks, 2030 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2336 ConstructedInterpolants, 0 QuantifiedInterpolants, 22953 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1655 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 34 InterpolantComputations, 22 PerfectInterpolantSequences, 250/330 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown